Preparation method of carbon and silicon carbide composite material

A carbon composite material and a composite material technology, which are applied in the field of carbon and silicon carbide composite material preparation, can solve the problems of low energy efficiency, high manufacturing cost, complicated process and the like, and achieve the effects of high precision, reduced preparation cost and simple preparation method.

Inactive Publication Date: 2015-03-11
CHONGQING XUXING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] After decades of research, there is still a big gap between our country and the developed countries in the preparation process of carbon and silicon carbide composite materials. There are mainly problems such as cumbersome process, high manufacturing cost, long cycle time and low energy efficiency.

Method used

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  • Preparation method of carbon and silicon carbide composite material

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preparation example Construction

[0023] Such as figure 1 Shown, a kind of carbon and silicon carbide composite material preparation method, comprises the steps:

[0024] Carrying out chemical vapor deposition of carbon fiber or its fabric prefabricated reinforcement to obtain non-graphitized carbon / carbon composite material A;

[0025] Prefabricated reinforcement of carbon fiber or its fabric is impregnated with thermosetting resin, cured, and then cyclically carbonized to obtain non-graphitized carbon / carbon composite material B;

[0026] Carbon fiber or its fabric prefabricated reinforcement and pitch impregnated cyclic carbonization to obtain non-graphitized carbon / carbon composite material C;

[0027] Graphitizing the graphitized carbon / carbon composite material A, the non-graphitized carbon / carbon composite material B, and the non-graphitized carbon / carbon composite material C to obtain carbon and silicon carbide composite materials.

Embodiment 1

[0029] Chemical vapor deposition of carbon fiber or its fabric prefabricated reinforcement to obtain non-graphitized carbon / carbon composite material A; carbon fiber or its fabric prefabricated reinforcement is impregnated and cured with thermosetting resin, and then cyclic carbonization is carried out at a deposition temperature of 900°C to obtain an ungraphitized carbon / carbon composite material A. Graphitized carbon / carbon composite material B; carbon fiber or its fabric prefabricated reinforcement and pitch impregnated with cyclic carbonization at a deposition temperature of 900°C to obtain non-graphitized carbon / carbon composite material C; graphitized carbon / carbon composite material A, non-graphitized Carbon / carbon composite material B and non-graphitized carbon / carbon composite material C were graphitized at a deposition temperature of 2100°C to obtain carbon and silicon carbide composite materials.

Embodiment 2

[0031] Carbon fiber or its fabric prefabricated reinforcement is subjected to chemical vapor deposition to obtain non-graphitized carbon / carbon composite material A; carbon fiber or its fabric prefabricated reinforcement is impregnated with thermosetting resin, cured, and then cyclically carbonized at a deposition temperature of 1200°C to obtain a non-graphitized carbon / carbon composite material A. Graphitized carbon / carbon composite material B; carbon fiber or its fabric prefabricated reinforcement and pitch impregnated with cyclic carbonization at a deposition temperature of 1000°C to obtain non-graphitized carbon / carbon composite material C; graphitized carbon / carbon composite material A, non-graphitized Carbon / carbon composite material B and non-graphitized carbon / carbon composite material C are graphitized at a deposition temperature of 2500°C to obtain carbon and silicon carbide composite materials.

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Abstract

The invention relates to a preparation method of a carbon and silicon carbide composite material, wherein the preparation method comprises the following steps: carrying out chemical vapor deposition of a prefabricated reinforcement body of carbon fiber or fabrics thereof to obtain a non-graphitized carbon/carbon composite material A; impregnating the prefabricated reinforcement body of the carbon fiber or the fabrics thereof with a thermosetting resin, curing, then carrying out cyclic carbonation to obtain a non-graphitized carbon/carbon composite material B; impregnating the prefabricated reinforcement body of the carbon fiber or the fabrics thereof with asphalt, carrying out cyclic carbonization to obtain a non-graphitized carbon/carbon composite material C; carrying out graphitization treatment of the non-graphitized carbon/carbon composite material A, the non-graphitized carbon/carbon composite material B and the non-graphitized carbon/carbon composite material C to obtain the carbon and silicon carbide composite material. The preparation method is simple, is high in precision degree, makes full use of raw materials, and can fast and efficiently prepare the carbon and silicon carbide composite material.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a method for preparing carbon and silicon carbide composite materials. Background technique [0002] The silicon carbide material industry is a typical strategic emerging industry, which is related to national security and is irreplaceable. With the development of aviation, aerospace and national defense, the service conditions of materials are becoming more and more harsh, and higher requirements are placed on the performance of materials. my country's carbon / silicon carbide material research and development resources are abundant, and the industry has outstanding advantages. Many national-level scientific research units, enterprises and investors have invested a lot of manpower, material resources, and funds to fully develop. The carbon / silicon carbide material technology system has gradually formed and is entering rapid development. period. [0003] After decades...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/80C04B35/565C04B35/622
Inventor 周祖渝
Owner CHONGQING XUXING CHEM
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